Door latch and lock



Patented Fees, 1927.] f 1 1 gfi 1,617,0012

m @Face-z,

' i WILLIAM n.5 WREAD, OFLos ANGELES, CALIFORNIA, AssIGNoR, -BY IvinsNR'AssIGN- 'I MENTS, To WREAD PRODUCTS CORPORATION, A CORPORATION ori/CALIFORNIA: j

DOOR LATOH'AND LOOK. Apisiication md August `2r, 1923. serial No. 659,529.`v`

i An object o fthis invention is to provide Fig. 4 is a ull size fragmental crossvsec- 65 Y a door latch and lock `that can be made eas; tion Online m4, Figs. 2 and 8. 'i

ily and quicklyv at lowcost; thatiis simple to Fig.v 5 is a full size traginental cross seci construct and assemble, and that is strong tion on line m5, Figs. 2and'8. 5 and durable, and easy to repair.' Fig. 6 is a ragmental insideview ofthe Another object is to provide alatch and faceplate showing the boss to which the 60 lock thatcan be installed in a door with ar casing of the latch is'attached. lf less expenditure of timeand labor and with- Fig. 7 is an end elevationl of the latch out the exercise of mechanical skill heretocasing.

. 10 fore required for 4installation of" locks in Fig. 8 is rairagmentall section on line m8,

doors. Q v g Y Fig.v l, enlarged to'actual size showing the C5 An Objectis to provide a lock that can be klatch bolt in latching position andthe lock applied to a door bywsimgly boring two parbolt in unlocked position and the key in allel holes in place yof a niortise.V That is to place. Y

. say, thisnewly invented lock and latch has' Fig. 9 is. a. ragmental `section analogous a case comprisinga rim plate andtwo tubes" to and onthe same scale as Fig. v8 ywith the 70- that aref insertable into lholes lthaty can be latch and lock bolts in alteredposition. f

bored with an ordinary straight bit. Fig.. 10'is a plan View of thellock dog.

w y A' feature of 'the invention is shown in vFig. lllisV a combined side and end view.

'the construction whereby .the latch is proof alatch dog. f i

vided .with a reversible bolt. Fig. 1,2 is acoinbined side and edg'e'view I5` The invention is shown'in the exceedingly yof the lock key. l f y simple lock which. comprises just four parts "The appliancev consists of an apertured bar inclusive of the. casing. or plate l having an outerand'inner` face Features of.-thexinventionfare shown in and to the inner face is detachably connecte the, novel construction,combination and artwo cylindrical elongated lcasings 2, 13 for 80 rangementof the parts whereby'a new 4,latch containingthe .parts of the latch and'lock f vandylock of pleasing andsimple appearance (mechanisms.

is produced. i Y Integral withthe platel andextending `Anfobject.isspeed in theinstallation of rearwardly therefrom are the vbosses 4, 5,

vdo'orzlatches andlocks'. f having rectangular openings therethrough; 85 j The'invention is broadly new, vbasic an'd vand to these bosses thelcasings 2, 3 are"d'e pioneer in that it comprises an apertured tachahly connected; and inthe outer wallsl l face plate .orbar adaptedjto the face of a of these bossesand ladjacent yto the plate 11 v door jamb and two elongated bolt casingspare cutA oppositely karranged concentric eachl fixed at its ,outer yend to the inner Jface fgrooves 6 Ithat are adapted to receive'the op- ,90* 1 Ofjsaidbarj andboltsoperating in their re- `positely disposed lugs? on the ends 8 ofthe sp'ective elongated bolt casings and the ape r"r cylindrical casings 2, 3, and the `bosses Vare g vtures of the fface plate or'bar.` provided with -oppositely disposed 'channels 4.o 'i Otherl objects', advantages andifeatures of 9` in the outer walls: that extend fromthe inventionmayappear romtheaccompanyfreeendof the bosses'into,the'eccentrie 95 Ving drawing, the sub-joined detail description grooves 6 so that theends'Soit" the casings and the Vappended claims'. can be' fitted over 'the bosses, with theV lugs 7 y he accompanying drawing illustrates the in channels 9 and moved towardlplate ly uninvention. p i til the lugs are `seated in the open end 'of Figurevl is a fragmental edge view of a theV grooves 6 after vwhich the cylindrical Y100 Adoorzwith a latch and lock j attached thereto casings are turned on their axis about ninety -;that is. .constructed in .accordance with` thisfdegrees to'seat the lugs 7; in the vclosedends y :nvention; the parts'bein'gf'shown about half of the grooves 6 and hold the c "1 'rs in al size. u fixedpo'sition. When the calsings 2, 3 areso Fig. 2i is aside view of. thelatch andl'ock attached to the bosses 4, 5 the cross ropening 10|v K Y `about three-fourths actual size assembled 10 in casing 2 andthelkey hole 11 in'casing and ready to att-ach to a door. 'v -Y 3 are arranged perpendicularto' the sides ofV Fig Bis a plan View ofFig. 2. f 'the appliance. n l n n Vithin the cylindrical casing 2 there is arranged the-reversible latch bolt 12 that has a beveled end slidabler through the rectangular opening 13 through the plate 1 and boss 4, and this bolt is provided with a .shoulder 14,v

`the latch dogs 17 that are loosely mounted.

on the cross bolt 15.

Thesejdogs have hubs in the cuter-walls of which are cut the concentric grooves 13 into which'are milled the flattened bearing edge 19 of the casing 2, and the hubs of the dogs are fitted therein so that they turneasily and freely when the cross bar 15 is rotated; and are also rotatably secured in place so that thebar 15 can be removed without displacing them. e

l Cross pins 2()V are extended through the tines of the'latch'bolt 12 in position to be engaged by the dogs 17 when they are ro-v tated; by which engagement the bolt 12 is moved back against the Ytension of spring 21 that is interposed between the closed end 22 of casing 2 andA a washer 23 abutting the forked end of bolt 12.V y

By the foregoing construction andv arrangement of parts the bolt 12 will be moved back against the tension ofV spring 2O when.-

ever the knobs 16 are turned to rotate the cross bolt 15 in either direction thereby moving the extended beveled end of the latch bolt to a position "entirely within vthe-appliance so that itvw'ill be released from the usual correspondingcatch member associated with a latch .but not shown as it is of common construction and forms no part of this invention; and when the knobs'are released Y the spring 20 returns .the'bolt 2O to latc'hing 50l position. rThat is, the beveled end ofQthe bolt is forced out by tension-of the spring into latching position.

l/Jithin the cylindricalcasing 3 is arranged the lock bolt 24 that has a rectangular' reduced end that is adapted to slide through the rectangular opening 25 through the platek `1 and boss 5, and this bolt has a shoulder '2 6 that is adapted to engage the free end.

of the boss 5 and limit the outward move- V ment of the bolt.

Rearward of the shoulder 26 ,the bolt 24 is reduced to the form of a plate theV thickness ofwhich is varied slightly in the different locks so that a key for one lock cannot effectively operate in another. and through this plate there is cut a key way 27 in which opening there is a Akey contacting nib 28 with two corresponding surfaces that are engaged by either of the edges 29 of a key 30 to move the bolt24 longitudinally of the casing 3.

A recesskvhaving notches 31, 32 is Vcut into the bolt 24 in position to be engaged by the catch 33 of the lock dog 34.

The dog 34 is pivoted on the pin'35; and itis formed with sides spaced apart a width sufficient for them vto move freely upor cown on opposite sides of the reduced portion of bolt 24; and so that the catch 33 at Vtheir free ends will alternately engage the notches 31, 32 and hold the rbolt in a fixed position or until the catch y33 is disengaged from the notches.

The catch -33 is lifted out of the notches 31, 32 by means of a pair of extensions 36 on the key 30. V I

When the key is turned in the opening 27 a pair of the extensions 36 pass upward on opposite sides of the flat portion of bolt 24 and engage the under edgesof the dog 34 and lift the free end thereof to disengage the catch 33 from either one or the 1 other of the notches 31, 32, after which one of the edges 29 of the key 30 engages one or the other surfaces of the; nib '28 to force the bolt 24 either into locking or unlocking position. Y

yer spring 37 is provided for holding the dog 34 toward the bolt y24.

The end of the casing. 3 screw plug` 38. Y Y' The appliance is attached to a door by first mortising a shallow rectangular recess 39 in the front edge 40 of a door 41 after which two parallel holes 42, 43 of slightly greater diameter than the cylindrical casings 2, 3 and of the same distance apart are bored in the front edge of the door at va proper place within the recess 39 .to receive the casings 2, 3.v c p Also .two cross holes are bored'from the is closed by a 43 at proper places for the cross bolt 15 and key hole 11, and the appliance is secured iii l can be provided with ornamental side plates '45 secured in place inthe usual way.

iio

lsides of the door to intersect the holes 42,

rlhe installation consists of iirst mortising ay rectangular recess of proper dimensions as previously stated toreceivethe face plate 1 jafter which` the .recessing for 'the' other 'parts'are accomplished by the'use of an,

auger of proper diameter; by which means the latch and lock can be attachedv to a door.

lclaim: 1. A door 'lock comprising a `plate having a boss formed therein; a cylindrical casing detachably connected to said boss, said plate and boss-having an opening therethrough, a llock bolt in said casing having one end slidable in said opening; a shoulder formed on said boltradapted to engage the free end of said boss to limitthe outward movement of said bolt, said bolt having a key way provided therein 'and forming a key contacting nib and corresponding surfaces at each side of said nib, said nib adapted forv engagement with the edge' of a? keyV to move said bolt longitudinally ofthe casing; saidr bolt formed with a recesshaving oppositely disposed notches, and a dog pivotally mounted in said casing and adapted for engagement with the said notches to hold therholt in adjusted' position.

2. A door lock comprising a plate having a boss formed thereon; a cylindrical casing vdetachably connected to said boss, said plate said kbolt longitudinally ofthecasing; said." y

bolt further provided with a recess having oppositely disposed notches formed therein; 'Y

a pin extending through said casing; a dog pivoted on said pin; a catch on said dog" adapted for engagementrwith said notches to hold said bolt lin extended position and .for releasingthe boltwhen the said key engages the said nib in either direction.,

3. A lock for doors comprising a plate havingan outer and inner face; a cylindricalcasing detachably connected to the inner face of said plate; a'lock bolt operable in said casing and being formed with a recess; 1

a key way intersecting said recess, a nib formed in said recess and having corresponding surfaces adapted 'forengagement With a key inserted in the key Way to move the bolt'longitudinally of the casing, said bolt formed on its upper edge with a recess having oppositely disposed notches provided therein and a dog pivoted in said casing and having a catch adapted for engagement with the notches to hold said bolt in extendedY position. o v f' In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 18th day of January, 1923. Y

` WILLIAM n. WREAD. 

